Abstract
Influence of alignment error and manufacturing error in face gear engagement is reported. Although many face gears are used for the fishing spinning reel, the time required for adjustment during the assembling of a reel has been increasing when the tooth flank is not modified. According to this report, it was shown when a tooth flank modification with transmission error (TE) controlled curve was applied to a manufactured tooth flank, and the influence of alignment error has been decreased. In a mass production, however, it is also necessary to take into account manufacturing error of a pinion gear and a face gear in addition to alignment error. In this research, those factors of manufacturing error were considered in the assembly error. The factor effect analysis was conducted by 3D simulation. On the other hand, it is well known that there are two types of interference, namely, "interference of tooth tip" and "interference of tooth root" on face gear engagement. Those interferences occur when a face gear and a pinion gear are in contact on the pitch circle (reference position). Through this research, a new type of interference was discovered, which comes from the impact of both an alignment and manufacturing error. Therefore, tooth flank modification with TE controlled curve needs to take into account this new type of interference. In this report, the actual sample was measured in the combination of an alignment and manufacturing error and the existence of this new type of interference were actually confirmed.
